CN114720203A - Sampling device for preventing smoke dust particulate matter from being adsorbed - Google Patents

Sampling device for preventing smoke dust particulate matter from being adsorbed Download PDF

Info

Publication number
CN114720203A
CN114720203A CN202210236090.9A CN202210236090A CN114720203A CN 114720203 A CN114720203 A CN 114720203A CN 202210236090 A CN202210236090 A CN 202210236090A CN 114720203 A CN114720203 A CN 114720203A
Authority
CN
China
Prior art keywords
sampling
output end
tube
sampling pipe
corona electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210236090.9A
Other languages
Chinese (zh)
Inventor
谢文强
刘帅敬
曹荣岗
滕书云
安瑞君
冯庆浩
梅小强
刘朋刚
窦灏
丁万生
李德安
田红兵
刘文亮
徐军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Minghua Electronic Instrument Co ltd
Original Assignee
Qingdao Minghua Electronic Instrument Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Minghua Electronic Instrument Co ltd filed Critical Qingdao Minghua Electronic Instrument Co ltd
Priority to CN202210236090.9A priority Critical patent/CN114720203A/en
Publication of CN114720203A publication Critical patent/CN114720203A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2247Sampling from a flowing stream of gas
    • G01N1/2258Sampling from a flowing stream of gas in a stack or chimney
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Dispersion Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a sampling device for preventing smoke dust particles from being adsorbed, and belongs to the technical field of particle sampling. The method comprises the following steps: the metal sampling pipe group comprises a first sampling pipe, a second sampling pipe, a third sampling pipe and a fourth sampling pipe which are connected in sequence; the far end of the first sampling pipe extends into the flue to be detected, and the near end of the fourth sampling pipe is connected with the particulate matter measuring module; the static generating device comprises a host part, a first static output end, a second static output end and a third static output end, wherein the first static output end and the second static output end have the same polarity, the first static output end and the third static output end have opposite polarities, the first static output end extends into the second sampling tube, and the second static output end is electrically connected with the third sampling tube; the third electrostatic output end extends into the fourth sampling tube. The invention solves the problem of poor measurement accuracy caused by the fact that particles of the existing sampling device are easy to adsorb on the tube wall.

Description

Sampling device for preventing smoke dust particulate matter from being adsorbed
Technical Field
The invention relates to the field of fixed pollution source sampling, in particular to a sampling device for preventing smoke dust particles from being adsorbed.
Background
With the improvement of domestic environment, the concentration of smoke dust particles, particularly the concentration of particles in fixed pollution sources, is lower and lower, and many enterprises have ultralow emission. At the moment, the concentration of the particulate matters discharged by enterprises is detected, and higher requirements are put forward for detection means. The current commonly used detection methods are gravimetric method and beta-ray direct reading method. The gravimetric method has complex procedures, needs repeated drying and weighing, and has long detection period. The beta ray direct reading method can read the concentration of the particulate matter on site, and has been paid more and more attention at present. The method is characterized in that a sampling pipe is inserted into a flue sampling port, and a beta ray concentration measuring device and an air extracting pump are arranged at the rear end of the sampling pipe. The air pump extracts the sample gas at the front end of the sampling pipe, and the sample gas enters the beta ray concentration measuring device through the sampling pipe, so that the concentration of the particulate matters can be detected.
At present, a beta-ray concentration measuring device is adopted for air exhaust, and when sample gas passes through a sampling pipe, part of particulate matters are adsorbed on the inner wall of the sampling pipe, so that the particulate matters received by the back-end beta-ray concentration measuring device are less, and the measured value of the particulate matters is lower than the actual value. Particularly, at present, low-concentration emission is mostly adopted, even ultra-low-concentration emission is adopted, and slight adsorption can cause great deviation of measured values of particulate matter concentration; for the problem of particle adsorption sampling pipe, at present, a metal pipe with a smooth inner wall is selected for improvement, but the problem cannot be solved more thoroughly in this way.
Disclosure of Invention
The invention aims to solve the technical problem that the measurement accuracy is poor due to the fact that part of particles are adsorbed on the inner wall of a sampling tube in the existing beta-ray concentration measurement device.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a sampling device for preventing smoke dust particulate matters from being adsorbed, which comprises: the metal sampling pipe group comprises a first sampling pipe, a second sampling pipe, a third sampling pipe and a fourth sampling pipe which are connected in sequence; the far end of the first sampling pipe extends into a flue to be detected, the near end of the fourth sampling pipe is connected with a particulate matter measuring module, and the length of the third sampling pipe is greater than that of any one of the first sampling pipe, the second sampling pipe and the fourth sampling pipe; the static generating device comprises a host part, a first static output end, a second static output end and a third static output end, wherein the first static output end and the second static output end have the same polarity, the first static output end and the third static output end have opposite polarities, and the first static output end extends into the second sampling pipe and is used for converting the particles in the second sampling pipe into charged particles with the first polarity; the second electrostatic output end is electrically connected with the third sampling tube; the third electrostatic output end extends into the fourth sampling tube and is used for neutralizing the charged particles with the first polarity to eliminate charges of the particles.
In some embodiments of the present invention, a ceramic tube is disposed in the second sampling tube, a first corona electrode is disposed in the ceramic tube, the first corona electrode is connected to the first electrostatic output end, and the first corona electrode is located in the center of the ceramic tube and extends along the length direction of the ceramic tube.
In some embodiments of the present invention, a second corona electrode is disposed in the fourth sampling tube, the second corona electrode is connected to the third electrostatic output end, and the second corona electrode is located in the center of the fourth sampling tube and extends along the length direction of the fourth sampling tube.
In some embodiments of the present invention, the corona onset voltage U of the first corona electrode 50 and the second corona electrode 60 is obtained by the following formula:
Figure 100002_DEST_PATH_IMAGE002
wherein R is1Is the corona pole radius; r2Is the radius of the sampling tube; m is the surface roughness coefficient of the corona electrode; and rho is the air density under the working condition.
In some embodiments of the invention, the corona onset voltage of the first corona electrode is the same as the corona onset voltage of the second corona electrode, and the first corona electrode and the second corona electrode have the same length.
In some embodiments of the invention, the first corona electrode has the same length as the second sampling tube, and the second corona electrode extends from the distal end of the fourth sampling tube to 1/2 of the fourth sampling tube.
In some embodiments of the present invention, the sampling tube further comprises a protective sleeve sleeved outside the metal sampling tube set, and the protective sleeve and the metal sampling tube set have an insulation gap therebetween and are separated by at least one insulation member.
In some embodiments of the present invention, the protective sleeve is located in an outer region where the first sampling tube, the second sampling tube and the third sampling tube are located, a first insulating member and a second insulating member are arranged between the protective sleeve and the first sampling tube, the second sampling tube and the third sampling tube, the first insulating member is located on one side of the second sampling tube close to the first sampling tube, and the second insulating member is located on one side of the third sampling tube close to the fourth sampling tube.
In some embodiments of the present invention, an insulating gap between the first insulating member and the second insulating member is filled with an insulating liquid.
In some embodiments of the present invention, the apparatus further comprises an ultrasonic vibration generator, wherein an output end of the ultrasonic vibration generator acts on the protective sleeve at a position close to the third sampling tube.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the sampling device for preventing the adsorption of the smoke dust particles, the particles in the sampling tube are combined with electrons generated by air ionization to form charged particles on the far end side of the metal sampling tube group, meanwhile, the longer third sampling tube is charged to enable the polarity of the third sampling tube to be the same as that of the charged particles, and the particles cannot be adsorbed on the tube wall of the sampling tube due to the mutual exclusion effect of like charges when passing through the third sampling tube, so that the measurement accuracy of the sampling device is greatly improved.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of one embodiment of a sampling device for preventing soot particulate matter adsorption according to the present invention;
FIG. 2 is a partial enlarged view of one embodiment of the sampling device for preventing soot particulate matter adsorption of the present invention;
FIG. 3 is another enlarged partial view of one embodiment of the sampling device for preventing soot particulate matter adsorption of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1-3, a specific embodiment of a sampling device (hereinafter referred to as a sampling device) for preventing smoke and dust particles from being adsorbed is shown, the sampling device is used for extending into a flue to be detected to obtain particles in the flue and conveying the particles along the particles to a particle measurement module. The sampling device includes a metal sampling tube set in an elongated tube configuration, and for convenience of description, in the present invention, the side of each portion of the sampling device near the particulate measurement module is defined as the proximal end, and the side near the flue is defined as the distal end.
The sampling device comprises a metal sampling pipe group, a first sampling pipe 11, a second sampling pipe 12, a third sampling pipe 13 and a fourth sampling pipe 14 which are connected in sequence; the far end of the first sampling pipe 11 extends into a to-be-detected flue, and the first sampling pipe 11 and the second sampling pipe 12 are in insulation connection through a first insulation part 31; the second sampling tube 12 is directly connected with the third sampling tube 13 or is in insulation connection through an insulation piece, the third sampling tube 13 is in insulation connection with the fourth sampling tube 14 through a second insulation piece 32, and the proximal end of the fourth sampling tube 14 is connected with a particulate matter measuring module 100, wherein the length of the third sampling tube 13 is far greater than that of any one of the first sampling tube 11, the second sampling tube 12 and the fourth sampling tube 14; specifically, the length of the first sampling tube 11 is 50mm-150mm, the length of the second sampling tube 12 is 30mm-60mm, the length of the third sampling tube 13 is 1000mm-1500mm, and the length of the fourth sampling tube 14 is 60mm-150 mm. It can be seen that, because the length of the third sampling tube 13 accounts for more than 90% of the total length of the metal tube group, which is much greater than the length of the other sampling tubes, the detection accuracy of the sampling device can be greatly improved by preventing the particles from being adsorbed on the third sampling tube 13.
The sampling device further comprises a static electricity generating device 20, which comprises a host part, a first static electricity output end 21, a second static electricity output end 22 and a third static electricity output end 23, wherein the first static electricity output end 21 and the second static electricity output end 22 have the same polarity, the first static electricity output end 21 and the third static electricity output end 23 have opposite polarities, and the first static electricity output end 21 extends into the second sampling tube 12 to convert the particles in the second sampling tube 12 into charged particles with the first polarity; the second electrostatic output end 22 is electrically connected with the third sampling pipe 13; the third electrostatic output end 23 extends into the fourth sampling pipe 14, and is used for neutralizing the charged particles with the first polarity, so that the particles are charged.
In this way, after the particles enter the metal sampling tube group through the distal end port of the first sampling tube 11, the particles are combined with electrons generated by ionized air through the second sampling tube 12 to form charged particles with a first polarity, for example, negatively charged particles; when passing through the third sampling pipe 13 again, because the third sampling pipe 13 is connected second static output 22, the polarity with electrified particulate matter is the same, electrified particulate matter can not adsorb on the third sampling pipe 13 under the effect that like poles repel each other, and when the particulate matter of negatively charged passes through the third sampling pipe 13 and reaches the fourth sampling pipe 14, the particle of negatively charged neutralizes with the positive ion in the air, eliminates the electric charge that combines together with the particulate matter. Finally, the particles without electric charge enter the particle measurement module 100 (such as a beta ray particle concentration measurement module) for subsequent measurement.
Above-mentioned sampling device makes the particulate matter in longer sampling pipe and the sampling pipe produce the like nature electric charge through the mode that introduces static generating device 20 among the sampling device, because like nature mutual exclusion effect avoids the particulate matter to adsorb on the pipe wall, has improved this sampling device's measurement accuracy greatly.
In an optional embodiment, the second sampling tube 12 and the third sampling tube 13 are directly integrated into a single tube, wherein a ceramic tube 40 is disposed in the second sampling tube 12, a first corona electrode 50 is disposed in the ceramic tube 40, the first corona electrode 50 is connected to the first electrostatic output end 21, and the first corona electrode 50 is located at the center of the ceramic tube 40 and extends along the length direction of the ceramic tube 40. Because the ceramic tube 40 is an insulating tube, after the air is ionized by the first corona electrode 50 applied with high voltage, the generated charged ions do not charge the ceramic tube, so that the particles to be measured are not attracted by the ceramic tube when passing through, but directly combine with the charges near the first corona electrode 50 to form charged particles, and then enter the third sampling tube 13.
More specifically, the length of the first corona electrode 50 is the same as the length of the second sampling tube 12, allowing sufficient ionization of the particulate matter in the second sampling tube 12 section.
The static electricity generating apparatus 20 is controlled to gradually apply a high voltage to the first corona electrode 50, and when the voltage increases to a certain value U, air in the vicinity of the first corona electrode 50 is ionized to generate positive ions and electrons. The positive ions are rapidly absorbed by the negatively charged first corona electrode 50, while the negatively charged electrons are repelled and trapped in the air. The electrons trapped in the air are enclosed in a circle centered on the first corona electrode 50, the circle having a diameter d 1. The larger the voltage, the larger the diameter d 1. As the voltage U1 continues to increase above the corona onset voltage U, the range of air ionization gradually expands, causing the particles to combine with electrons that are trapped in the air into negatively charged particles.
In an alternative embodiment, a second corona electrode 60 is disposed in the fourth sampling tube 14, the second corona electrode 60 is connected to the third electrostatic output 23, and the second corona electrode 60 is located at the center of the fourth sampling tube 14 and extends along the length direction of the fourth sampling tube 14. More specifically, the second corona electrode 60 extends from the distal end of the fourth sampling tube 14 to 1/2 of the fourth sampling tube 14.
Wherein the corona starting voltage U of the first corona electrode 50 and the second corona electrode 60 is obtained by the following formula:
Figure DEST_PATH_IMAGE003
wherein R is1Is the corona pole radius (the corona pole is the first corona pole or the second corona pole); r2The radius of the sampling pipe is (the sampling pipe is a ceramic pipe corresponding to the first corona electrode or a fourth sampling pipe corresponding to the second corona electrode); m is the surface roughness coefficient of the corona electrode; and rho is the air density under the working condition.
Wherein, the air density rho under the working condition is obtained by the following formula:
Figure DEST_PATH_IMAGE005
ρ1 、P1 、T1air density, atmospheric pressure and temperature values under standard conditions; rho1Is 1.293kg/m3; P11013 mbar; t is1273K; wherein T, P is the temperature value of gas under working conditionAnd the pressure value is measured by a working condition measuring instrument.
A corona onset voltage U of the first corona electrode 501Corona onset voltage U with second corona electrode 602Are equal. Meanwhile, the first corona electrode 50 and the second corona electrode 60 have the same length. Through the aforesaid setting, can make the particulate matter fully ionize in second sampling pipe 12 sections on the one hand, simultaneously, make the electric ion quantity that second sampling pipe 12 and fourth sampling pipe 14 produced unanimous basically, make electrified particulate matter can thoroughly neutralize at the anterior segment of fourth sampling pipe 14, avoid electrified particle entering particulate matter measuring module 100 department as far as possible.
In an alternative embodiment, a conductive wire is wound on the outer tube wall of the third sampling tube 13, and the conductive wire is connected with the second electrostatic output end 22; the conducting wires are uniformly arranged on the tube wall of the third sampling tube 13, so that the charges of all parts of the third sampling tube 13 are relatively uniform.
In order to protect the safety of the sampling personnel, the sampling device further comprises a protective sleeve 70 sleeved outside the metal sampling pipe group, the protective sleeve 70 is an insulating sleeve which can avoid the damage of static electricity to the sampling personnel during sampling, and an insulating gap is arranged between the protective sleeve 70 and the metal sampling pipe group and is isolated by at least one insulating piece.
In an alternative embodiment, the protective sleeve 70 is located in the outer region where the first sampling tube 11, the second sampling tube 12 and the third sampling tube 13 are located, and the protective sleeve 70 is insulated from the first sampling tube 11, the second sampling tube 12 and the third sampling tube 13 by the first insulating member 31 and the second insulating member 32; on one hand, the first insulator 31 isolates the protective sleeve 70, the first sampling tube 11 and the second sampling tube 12, and simultaneously realizes the insulation connection between the first sampling tube 11 and the second sampling tube 12, and on the other hand, the second insulator 32 isolates the protective sleeve 70, the third sampling tube 13 and the fourth sampling tube 14, and simultaneously realizes the insulation connection between the third sampling tube 13 and the fourth sampling tube 14.
In order to further avoid the adsorption of particles on the wall of the sampling tube, the sampling device further comprises an ultrasonic vibration generator 80 acting on the protective sleeve 70 at a position close to the third sampling tube 13. The high-frequency vibration of the ultrasonic vibration generating device 80 is utilized to strip the extremely small amount of particulate matters adsorbed on the inner wall of the sampling pipe, and the particulate matter concentration detection precision is improved. Since the third sampling tube 13 is long and some of the large particles may be adsorbed on the proximal side of the third sampling tube 13, the output end of the ultrasonic vibration generating apparatus 80 is located near the proximal side of the third sampling tube 13.
In order to make the ultrasonic vibration propagation more uniform, the insulation gap of the protection sleeve 70 and the metal sampling tube set is filled with an insulating liquid 90 at a position between the first insulating member 31 and the second insulating member 32. Such as filled with an electron fluorinated liquid. Like this, the high-frequency vibration power that pierces through electron fluorinated liquid can be evenly acted on third sampling pipe 13, and third sampling pipe 13 atress is more even, peels off the more high-efficient of the particulate matter that adsorbs on the sampling pipe inner wall.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a prevent adsorbed sampling device of smoke and dust particulate matter which characterized in that includes:
the metal sampling pipe group comprises a first sampling pipe, a second sampling pipe, a third sampling pipe and a fourth sampling pipe which are connected in sequence; the far end of the first sampling pipe extends into a flue to be detected, the near end of the fourth sampling pipe is connected with a particulate matter measuring module, and the length of the third sampling pipe is greater than that of any one of the first sampling pipe, the second sampling pipe and the fourth sampling pipe;
the static generating device comprises a host part, a first static output end, a second static output end and a third static output end, wherein the first static output end and the second static output end have the same polarity, the first static output end and the third static output end have opposite polarities, and the first static output end extends into the second sampling pipe and is used for converting the particles in the second sampling pipe into charged particles with the first polarity; the second electrostatic output end is electrically connected with the third sampling tube; the third electrostatic output end extends into the fourth sampling tube and is used for neutralizing the charged particles with the first polarity to eliminate charges of the particles.
2. The sampling device according to claim 1, wherein a ceramic tube is arranged in the second sampling tube, a first corona electrode is arranged in the ceramic tube, the first corona electrode is connected with the first electrostatic output end, and the first corona electrode is located in the center of the ceramic tube and extends along the length direction of the ceramic tube.
3. The sampling device of claim 2, wherein a second corona electrode is arranged in the fourth sampling pipe, the second corona electrode is connected with the third electrostatic output end, and the second corona electrode is located in the center of the fourth sampling pipe and extends along the length direction of the fourth sampling pipe.
4. The sampling device for preventing the adsorption of smoke and dust particles as claimed in claim 3, wherein the corona inception voltage U of said first corona electrode 50 and said second corona electrode 60 is obtained by using the following formula:
Figure DEST_PATH_IMAGE002
wherein R is1Is the corona pole radius; r2Is the radius of the sampling tube; m is the surface roughness coefficient of the corona electrode; and rho is the air density under the working condition.
5. The sampling device of claim 3, wherein the corona onset voltage of the first corona electrode is the same as the corona onset voltage of the second corona electrode, and the first corona electrode is the same as the second corona electrode in length.
6. The sampling device of claim 4, wherein the first corona electrode has the same length as the second sampling tube, and the second corona electrode extends from the distal end of the fourth sampling tube to 1/2 of the fourth sampling tube.
7. The sampling device for preventing the adsorption of the smoke and dust particles as claimed in claim 1, further comprising a protective sleeve sleeved outside the metal sampling tube set, wherein the protective sleeve and the metal sampling tube set have an insulation gap therebetween and are separated by at least one insulation member.
8. The sampling device for preventing the adsorption of the smoke and dust particles as claimed in claim 7, wherein the protective sleeve is isolated from the first sampling tube and the second sampling tube by a first insulator, and the protective sleeve is isolated from the third sampling tube and the fourth sampling tube by a second insulator.
9. The sampling device of claim 8, wherein the insulation gap between the first and second insulators is filled with an insulation liquid.
10. The sampling device for preventing the adsorption of smoke particles as claimed in claim 7, further comprising an ultrasonic vibration generator, wherein an output end of said ultrasonic vibration generator is applied to a position where said protection sleeve approaches said third sampling tube.
CN202210236090.9A 2022-03-11 2022-03-11 Sampling device for preventing smoke dust particulate matter from being adsorbed Pending CN114720203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210236090.9A CN114720203A (en) 2022-03-11 2022-03-11 Sampling device for preventing smoke dust particulate matter from being adsorbed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210236090.9A CN114720203A (en) 2022-03-11 2022-03-11 Sampling device for preventing smoke dust particulate matter from being adsorbed

Publications (1)

Publication Number Publication Date
CN114720203A true CN114720203A (en) 2022-07-08

Family

ID=82237343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210236090.9A Pending CN114720203A (en) 2022-03-11 2022-03-11 Sampling device for preventing smoke dust particulate matter from being adsorbed

Country Status (1)

Country Link
CN (1) CN114720203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116337703A (en) * 2023-05-25 2023-06-27 江苏中能电力设备有限公司 Measuring device for detecting smoke emission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116337703A (en) * 2023-05-25 2023-06-27 江苏中能电力设备有限公司 Measuring device for detecting smoke emission

Similar Documents

Publication Publication Date Title
US7549318B2 (en) Method and device for the measurement of the number concentration and of the average diameter of aerosol particles
ES2550508T3 (en) Apparatus for monitoring aerosol particles
WO2013175548A1 (en) Particle count measurement device
CN109469533B (en) Variable voltage coagulation device for controlling quantity of micro-nano particles
US5550381A (en) Event counting alpha detector
JP3408543B2 (en) High gas flow alpha detector
WO2013079008A1 (en) Corona discharging device and ion migration spectrometer having same
CN114720203A (en) Sampling device for preventing smoke dust particulate matter from being adsorbed
CN106961777B (en) A kind of no mechanical device ion blower
CN109655857B (en) Measuring instrument pair for improving radon exhalation rate by annular electrode218Measuring cavity and method for Po collection efficiency
CN109254314B (en) With ring electrodes increasing positive charge218Po collection efficiency measurement cavity and method
JP2015083293A (en) Electric dust collection filter unit
CN217006565U (en) Particulate matter sampling detection device
Hamou et al. Modeling and simulation of the effect of pressure on the corona discharge for wire-plane configuration
Ziedan et al. Onset voltage of corona discharge in wire-duct electrostatic precipitators
CN209844212U (en) Separated air negative ion generator
CN111122396B (en) Differential high-concentration particulate matter measuring system and method based on dynamic Faraday cup
CN114199729A (en) Method and system for measuring particle size distribution of atmospheric aerosol based on natural ion charge
CN208336147U (en) The plasma ionization device of Atmospheric particulates
CN103487824A (en) Radon daughter sampling device based on high-voltage corona discharge
CN104934287A (en) Low field difference ion migration spectrometer and substance detection method thereof
Laitinen et al. Performance of a sonic jet-type charger in high dust load
Hinds et al. An ion generator for neutralizing concentrated aerosols
CN109870392B (en) Natural radioactive aerosol electrocoagulation and elimination experiment system
JP4671153B2 (en) Open window ionization chamber

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination